CrucialCT275MX300SSD1
SanDiskSDSSDXPS-240G

Controller: Marvell 88SS1074. Flash Memory: Micron 3D TLC.

Controller: Marvell 88SS9187-BLD2. Flash Memory: SanDisk 19nm eX2 ABL MLC.

Real World Speed
Performance profile from 13,828 user samples
9,768 User Benchmarks
Best Bench: 82% 40GB free
Worst Bench: 51% 155GB free
Poor: 51% Great: 82%
SPEED RANK: 366th / 873
4,060 User Benchmarks
Best Bench: 107% 200GB free
Worst Bench: 65% 77GB free
Poor: 65% Great: 107%
SPEED RANK: 115th / 873
Effective Speed
Effective SSD Speed
68.2 % -27% 86.8 % Faster effective speed.
+27%
Read
Avg. Sequential Read Speed
464 MB/s -6% 492 MB/s Slightly faster read speed.
+6%
Write
Avg. Sequential Write Speed
299 MB/s -41% 421 MB/s Much faster write speed.
+41%
4K Read
Avg. 4K Random Read Speed
22.8 MB/s -29% 29.5 MB/s Faster random read.
+29%
4K Write
Avg. 4K Random Write Speed
57.9 MB/s -39% 80.2 MB/s Much faster random write.
+39%
Mixed
Avg. Sequential Mixed IO Speed
310 MB/s -36% 422 MB/s Much faster mixed IO speed.
+36%
4K Mixed
Avg. 4K Random Mixed IO Speed
16.7 MB/s -26% 21 MB/s Faster random mixed IO.
+26%
Read
Peak Sequential Read Speed
485 MB/s -6% 516 MB/s Slightly faster peak read speed.
+6%
Write
Peak Sequential Write Speed
338 MB/s -46% 493 MB/s Much faster peak write speed.
+46%
4K Read
Peak 4K Random Read Speed
27.7 MB/s -30% 36 MB/s Faster peak random read.
+30%
4K Write
Peak 4K Random Write Speed
81.7 MB/s -43% 117 MB/s Much faster peak random write.
+43%
Mixed
Peak Sequential Mixed IO Speed
339 MB/s -43% 486 MB/s Much faster peak mixed IO speed.
+43%
4K Mixed
Peak 4K Random Mixed IO Speed
24.3 MB/s -20% 29.2 MB/s Faster peak random mixed IO.
+20%
Market Share
Based on 4,776,024 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.83 % Hugely higher market share.
+538%
0.13 % -538%
Value
Value For Money
76.7 % -2% 77.9 % +2%
User Rating
UBM User Rating
66 % +2% 65 % -2%
Price
Price (score)
$89 Cheaper.
+15%
$105 -15%
Age
Newest
18 Months Much more recent.
+57%
42 Months -57%
DQ Read
Peak 4K-64Thread Read Speed
230 MB/s -58% 364 MB/s Much faster peak deep queue read.
+58%
DQ Write
Peak 4K-64Thread Write Speed
219 MB/s -49% 326 MB/s Much faster peak deep queue write.
+49%
AS-SSD Total
AS-SSD Total Score
800 Pts -48% 1,187 Pts Much stronger server IO.
+48%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
40.2 MB/s -63% 65.4 MB/s Much faster peak deep queue mixed IO.
+63%
ADQ Read
Avg. 4K-64Thread Read Speed
124 MB/s -34% 166 MB/s Much faster deep queue read.
+34%
ADQ Write
Avg. 4K-64Thread Write Speed
135 MB/s -39% 187 MB/s Much faster deep queue write.
+39%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
24.2 MB/s -55% 37.5 MB/s Much faster deep queue mixed IO.
+55%
Capacity
Capacity
275GB 240GB
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The 275GB Crucial MX300 supersedes the MX200. Unlike its predecessor, the MX300 is TLC based and therefore suffers from weak write speeds in comparison to MLC drives. The MX300 utilises a sophisticated algorithm to enable fast burst write speeds provided that there is sufficient free space on the disk but as the drive fills up write performance drops to the relatively poor levels seen on other TLC drives (similar to mechanical drives). At current prices (70 USD) the MX300 competes well with other low end drives such as the OCZ Trion, Adata SP550 and Samsung 750 EVO. As stocks build the MX300 is likely to see further price cuts, so it could become a very interesting value proposition. See the current value leaders here[Sep '16 SSDrivePro]

MORE DETAILS

The 240GB Sandisk Extreme Pro uses the same controller and NAND as its 13 months younger predecessor, the Extreme II. Comparing the Extreme II and Extreme Pro shows that average performance has increased by 10% but peak performance remains broadly unchanged. The Pro features an improved nCache which uses an SLC buffer to cache writes prior to writing them to the slower MLC NAND. In order to benefit from this improved caching, huge amounts of data need to be written for extended periods, an unlikely consumer scenario. Comparing core performance between the Samsung 840 Evo and Extreme Pro shows that the Extreme Pro averages around 12% faster than the Evo. The Extreme Pro also has a 10 year warranty but I wonder if SATA 3 will even be around at that time. Although the Extreme Pro has a superb performance profile it's not a game changer. [Jun '14 SSDrivePro]

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Solid State Drive Rankings (Price vs Performance) December 2017 SSD Rankings.

Welcome to our consumer SSD comparison. We calculate effective speed based on real world performance then adjust by cost per GB to yield a value for money rating. Calculated values don't always tell the whole picture so we check them against thousands of individual user ratings. The customizable table below combines these factors and more to bring you the definitive list of top SSDs. Share your opinion by voting. [SSDrivePro]

How Fast Is Your SSD? (Bench your build) Size up your PC in less than a minute.

Welcome to our freeware PC speed test tool. UserBenchmark will test your PC and compare the results to other users with the same components. You can quickly size up your PC, identify hardware problems and explore the best upgrades.

UserBenchmark of the month

How it works

  • - Download and run UserBenchMark (UBM).
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write and mixed IO.
  • - Checks include: 4k Align, NCQ, TRIM, SATA, USB & S.M.A.R.T.
  • - RAM tests include: single/multi core bandwidth and latency.
  • - Reports are generated and presented on userbenchmark.com.
  • - Identify the strongest components in your PC.
  • - See speed test results from other users.
  • - Compare your components to the highest voted in class.
  • - Find the best upgrades.
  • - Share your opinion by voting.

 Frequently Asked Questions

 Best User Rated

The Best.
CPUGPUSSD
Intel Core i7-7700K $280Nvidia GTX 1070 $410Samsung 850 Evo 250GB $85
AMD Ryzen 7 1700 $245AMD RX 480 $265Samsung 850 Pro 256GB $110
Intel Core i5-7600K $210Nvidia GTX 1060-6GB $260Samsung 850 Evo 500GB $140
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $205SanDisk Extreme 64GB $43
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $1,050SanDisk Extreme 32GB $22
Seagate Barracuda 2TB (2016) $60Corsair Vengeance LPX DDR4 3200 C16 2x8GB $215SanDisk Ultra Fit 32GB $10
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